CN105804046A - Processing method for soft clay foundation - Google Patents
Processing method for soft clay foundation Download PDFInfo
- Publication number
- CN105804046A CN105804046A CN201610208791.6A CN201610208791A CN105804046A CN 105804046 A CN105804046 A CN 105804046A CN 201610208791 A CN201610208791 A CN 201610208791A CN 105804046 A CN105804046 A CN 105804046A
- Authority
- CN
- China
- Prior art keywords
- gutter
- broken stone
- stone pile
- treatment
- soft clay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/106—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by forming sand drains containing only loose aggregates
Abstract
The invention discloses a processing method for a soft clay foundation. Gravel piles and sand wells are arranged in the vertical direction, and drainage ditches and hardcore beds are arranged in the horizontal direction for water drainage, so that soil body consolidation is accelerated effectively under the action of upper structural loads, and the bearing capacity of foundation soil is improved. According to the processing method for the soft clay foundation, the technological processing cost is low, the speed is high, and good economic benefits are achieved.
Description
Technical field
The invention belongs to civil engineering and Geotechnical Engineering field, be specifically related to a kind for the treatment of of soft clay ground foundation method.
Background technology
Traditional broken stone pile mainly considers soil compound action.Defect: drainage speed is slow, and the soil solidifying time is long.
Summary of the invention
The present invention arranges sand drain between broken stone pile and is conducive to inter-pile soil water vertically to discharge, gutter is set on top simultaneously and forms coherent drainage system with vertical drainage, accelerate draining, accelerate soil solidifying speed, under upper load effect, further speed up the discharge of soil water and accelerate soil solidifying, improving the bearing capacity of soil.
The invention aims to the defect solving exist in prior art, it is provided that one can be accelerated soil solidifying, improve bearing capacity of foundation slab, reduces the method for processing foundation of sedimentation.
In order to achieve the above object, the invention provides a kind for the treatment of of soft clay ground foundation method, by vertically arranged broken stone pile and sand drain, level is to arranging gutter and laying blotter and carry out Drainage Design.Comprise the following steps:
(1) within the scope of design basement process, it is passed down through Soft Soil Layer and is uniformly arranged multiple broken stone pile；Broken stone pile often adjacent four square arrangements or often adjacent three arrangements in equilateral triangle；
(2) the geometric center place arranged in the square arrangement of broken stone pile or equilateral triangle is respectively provided with a sand drain；
(3) within the scope of the ground of each square arrangement or equilateral triangle arrangement centered by sand drain, respectively gutter is set to the line of centres of the adjacent broken stone pile constituting arrangement；The gutter of each arrangement is mutually communicated the webbed through gutter of shape；Sandstone are filled in through gutter；
(4) each netted port in through gutter is to extended closed row ditch outside design basement process scope；
(5) within the scope of design basement process, blotter is laid.
Specifically comprising the following steps that of method for processing foundation of the present invention
(1) adopting vibroflotation or immersed tube mode to make certain diameter and length (through Soft Soil Layer) broken stone pile, (within the scope of design basement process), broken stone pile is arranged according to square or equilateral triangle in the venue；The diameter of broken stone pile is 500-1000mm, and broken stone pile length is for be advisable through weak soil thickness, and adjacent broken stone pile is spaced apart 2-3 times of broken stone pile diameter；
(2) at the geometric center construction diameter 80mm of the broken stone pile arrangement pressing design square or equilateral triangle layout, length and broken stone pile are with long sand drain 2；
(3) broken stone pile pile crown and place are processed；
(4) each square arrangement or equilateral triangle are arranged centered by sand drain, arrange gutter to the line of centres of the adjacent broken stone pile constituting arrangement respectively, and each adjacent broken stone pile is connected and arranges gutter；The gutter of each arrangement is mutually communicated the webbed through gutter of shape；Through draining ditch depth 300-500mm, wide 600-800mm, and to place flare gradient 1%；
(5) in through gutter, clay content is filled out less than 3% grating sandstone；
(6) arranging closed row ditch at the outer certain distance of design basement process scope to be connected with through gutter, absolute altitude at the bottom of gutter is lower than absolute altitude 800mm at the bottom of through gutter；
(7) laying blotter 6, the thickness of blotter 6 to reserve building settlement amount after construction, and thickness is typically in estimating on the basis of settling amount plus 150-300mm.
The present invention has the advantage that the present invention had both played broken stone pile stake soil compound action compared to existing technology, utilizes again sand drain effect；Under superstructure load action, the water in bury is discharged to drainage channel by broken stone pile, the vertical drainage passage of sand drain and the level in gutter, blotter, accelerates soil solidifying, improves bearing capacity of foundation slab.And reserved sand-gravel cushion solves the later stage consolidation settlement of bury well and brings the reduction of basis actual elevation.The technology of the present invention processing cost is low, and speed is fast, has good economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the broken stone pile that step (1) makes in the specific embodiment of the invention；
Fig. 2 is the structural representation of step (1) broken stone pile distribution in the specific embodiment of the invention；
Fig. 3 is the structural representation of broken stone pile that in the specific embodiment of the invention, step (2) makes and sand drain；
Fig. 4 is the structural representation of step (2) broken stone pile in the specific embodiment of the invention, sand drain distribution；
Fig. 5 is that in the specific embodiment of the invention, step (6) arranges the structural representation behind gutter；
Fig. 6 is the structural representation of step (6) gutter distribution in the specific embodiment of the invention；
Fig. 7 is the structural representation after the construction of specific embodiment of the invention superstructure.
In figure, 1-broken stone pile, 2-sand drain, the through gutter of 3-, 4-closed row ditch, 5-foundation soil, 6-blotter, 7-basis, 8-superstructure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figures 1 to 7, treatment of soft clay ground foundation method of the present invention, specifically comprise the following steps that
(1) adopting vibroflotation or immersed tube mode to make certain diameter and length (through Soft Soil Layer) broken stone pile 1, (within the scope of design basement process), broken stone pile 1 is arranged according to square or equilateral triangle in the venue；The diameter of broken stone pile is 500-1000mm, and length is to be advisable through weak soil thickness, and adjacent broken stone pile is spaced apart 2-3 times of broken stone pile diameter, determines with specific reference to superstructure design；
(2) at the geometric center construction diameter 80mm of the broken stone pile arrangement pressing design square or equilateral triangle layout, length and broken stone pile are with long sand drain；
(3) broken stone pile pile crown and place are processed；
(4) each square arrangement or equilateral triangle are arranged centered by sand drain, arrange gutter to the line of centres of the adjacent broken stone pile constituting arrangement respectively, and each adjacent broken stone pile is connected and arranges gutter；The gutter of each arrangement is mutually communicated the webbed through gutter 3 of shape；Through gutter 3 deep 300-500mm, wide 600-800mm, and to place flare gradient 1%；
(5) in through gutter 3, clay content is filled out less than 3% grating sandstone；
(6) arrange closed row ditch 4(at the outer certain distance of design basement process scope to be located on foundation soil 5) it is connected with through gutter 3, absolute altitude at the bottom of gutter is lower than through gutter 3 end absolute altitude 800mm；
(7) laying blotter 6, the thickness of blotter 6 to reserve building settlement amount after construction, and thickness is typically in estimating on the basis of settling amount plus 150-300mm；
(8) basis 7 construction and superstructure 8 are constructed；
(9) with water pump, closed row ditch water is discharged outside place.
Claims (9)
1. a treatment of soft clay ground foundation method, it is characterised in that: by vertically arranged broken stone pile and sand drain, level is to arranging gutter and laying blotter and carry out Drainage Design.
2. treatment of soft clay ground foundation method according to claim 1, it is characterised in that comprise the following steps:
(1) within the scope of design basement process, it is passed down through Soft Soil Layer and is uniformly arranged multiple broken stone pile；Often adjacent four the square arrangements of described broken stone pile or often adjacent three arrangements in equilateral triangle；
(2) the geometric center place arranged in the square arrangement of described broken stone pile or equilateral triangle is respectively provided with a sand drain；
(3) within the scope of the ground of each square arrangement or equilateral triangle arrangement centered by sand drain, arranging gutter to the line of centres of the adjacent broken stone pile constituting arrangement respectively, each adjacent broken stone pile is connected and arranges gutter；The gutter of each arrangement is mutually communicated the webbed through gutter of shape；Sandstone are filled in described through gutter；
(4) each netted port in described through gutter is to extended closed row ditch outside design basement process scope；
(5) within the scope of design basement process, blotter is laid.
3. treatment of soft clay ground foundation method according to claim 2, it is characterised in that: the degree of depth in described closed row ditch is more than the degree of depth in described through gutter.
4. treatment of soft clay ground foundation method according to claim 3, it is characterised in that: described through draining ditch depth 300-500mm, wide 600-800mm, and to place outer incline；At the bottom of described closed row ditch, absolute altitude is lower than absolute altitude 800mm at the bottom of through gutter.
5. treatment of soft clay ground foundation method according to claim 4, it is characterised in that: described through gutter is 1% to the gradient outside place.
6. treatment of soft clay ground foundation method according to claim 2, it is characterised in that: after described step (2) arranges sand drain, after processing broken stone pile pile crown and place, then the gutter carrying out step (3) is arranged.
7. treatment of soft clay ground foundation method according to claim 2, it is characterised in that: the sandstone filled in described through gutter are that clay content is less than 3% grating sandstone.
8. treatment of soft clay ground foundation method according to claim 2, it is characterised in that: the diameter of described broken stone pile is 500-1000mm, and broken stone pile length is thickness of soft soil, and adjacent broken stone pile is spaced apart 2-3 times of broken stone pile diameter；The diameter of described sand drain is 80mm, and length is consistent with broken stone pile length.
9. treatment of soft clay ground foundation method according to claim 2, it is characterised in that: the thickness of described step (5) medium stone bed course is 150-300mm and estimate settling amount sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208791.6A CN105804046A (en) | 2016-04-06 | 2016-04-06 | Processing method for soft clay foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208791.6A CN105804046A (en) | 2016-04-06 | 2016-04-06 | Processing method for soft clay foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105804046A true CN105804046A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610208791.6A Pending CN105804046A (en) | 2016-04-06 | 2016-04-06 | Processing method for soft clay foundation |
Country Status (1)
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| CN (1) | CN105804046A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055845A (en) * | 2019-05-15 | 2019-07-26 | 浙江沧海建设有限公司 | A kind of construction method that highway bridge and culvert two sides are soft soil roadbed |
| CN110886306A (en) * | 2019-10-19 | 2020-03-17 | 北京工业大学 | Self-adaptive drainage and pressure reduction system and method for easy-liquefaction foundation of underground comprehensive pipe gallery |
| CN111395303A (en) * | 2020-03-23 | 2020-07-10 | 太原理工大学 | Horizontal arrangement method for draining water and discharging salt of soft foundation of saline soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53140810A (en) * | 1977-05-13 | 1978-12-08 | Nippon Steel Corp | Synthetic sand for sand drain |
| CN101024951A (en) * | 2007-03-16 | 2007-08-29 | 陈俊生 | Foundation processing method |
| CN101463599A (en) * | 2009-01-16 | 2009-06-24 | 湖南大学 | Bidirectional reinforcing and water drainage reinforcing means for highway soft soil foundation |
| CN101634143A (en) * | 2009-08-27 | 2010-01-27 | 中冶建筑研究总院有限公司 | Method for treating spiral oil-extruding filling pile composite foundation in stratum containing soft clay |
| CN101922146A (en) * | 2009-09-15 | 2010-12-22 | 东南大学 | Method for performing foundation treatment by using permeable concrete pipe piles |
| CN102226335A (en) * | 2011-04-18 | 2011-10-26 | 中交四航工程研究院有限公司 | Foundation treatment method for controlling post-construction settlement and deformation of soft soil |
| CN102839683A (en) * | 2012-09-19 | 2012-12-26 | 山东大学 | Discrete pile-water permeability concrete pile novel binary composite foundation and treatment method of composite foundation |
| CN103015399A (en) * | 2012-12-26 | 2013-04-03 | 中交四航工程研究院有限公司 | Earthquake disaster reduction system for liquefiable foundation and foundation treatment method |
| CN103031836A (en) * | 2013-01-08 | 2013-04-10 | 中交四航工程研究院有限公司 | Method for quickly building road on new reclamation sludge foundation |
| CN204662478U (en) * | 2015-05-21 | 2015-09-23 | 河海大学 | A kind of can the cast-in-situ concrete X-shaped pile composite foundation of draining |
-
2016
- 2016-04-06 CN CN201610208791.6A patent/CN105804046A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53140810A (en) * | 1977-05-13 | 1978-12-08 | Nippon Steel Corp | Synthetic sand for sand drain |
| CN101024951A (en) * | 2007-03-16 | 2007-08-29 | 陈俊生 | Foundation processing method |
| CN101463599A (en) * | 2009-01-16 | 2009-06-24 | 湖南大学 | Bidirectional reinforcing and water drainage reinforcing means for highway soft soil foundation |
| CN101634143A (en) * | 2009-08-27 | 2010-01-27 | 中冶建筑研究总院有限公司 | Method for treating spiral oil-extruding filling pile composite foundation in stratum containing soft clay |
| CN101922146A (en) * | 2009-09-15 | 2010-12-22 | 东南大学 | Method for performing foundation treatment by using permeable concrete pipe piles |
| CN102226335A (en) * | 2011-04-18 | 2011-10-26 | 中交四航工程研究院有限公司 | Foundation treatment method for controlling post-construction settlement and deformation of soft soil |
| CN102839683A (en) * | 2012-09-19 | 2012-12-26 | 山东大学 | Discrete pile-water permeability concrete pile novel binary composite foundation and treatment method of composite foundation |
| CN103015399A (en) * | 2012-12-26 | 2013-04-03 | 中交四航工程研究院有限公司 | Earthquake disaster reduction system for liquefiable foundation and foundation treatment method |
| CN103031836A (en) * | 2013-01-08 | 2013-04-10 | 中交四航工程研究院有限公司 | Method for quickly building road on new reclamation sludge foundation |
| CN204662478U (en) * | 2015-05-21 | 2015-09-23 | 河海大学 | A kind of can the cast-in-situ concrete X-shaped pile composite foundation of draining |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055845A (en) * | 2019-05-15 | 2019-07-26 | 浙江沧海建设有限公司 | A kind of construction method that highway bridge and culvert two sides are soft soil roadbed |
| CN110886306A (en) * | 2019-10-19 | 2020-03-17 | 北京工业大学 | Self-adaptive drainage and pressure reduction system and method for easy-liquefaction foundation of underground comprehensive pipe gallery |
| CN111395303A (en) * | 2020-03-23 | 2020-07-10 | 太原理工大学 | Horizontal arrangement method for draining water and discharging salt of soft foundation of saline soil |
| CN111395303B (en) * | 2020-03-23 | 2021-03-02 | 太原理工大学 | Horizontal arrangement method for draining water and discharging salt of soft foundation of saline soil |
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Application publication date: 20160727 |